### Copyright (C) 1996 John W. Eaton
###
### This file is part of Octave.
###
### Octave is free software; you can redistribute it and/or modify it
### under the terms of the GNU General Public License as published by
### the Free Software Foundation; either version 2, or (at your option)
### any later version.
###
### Octave is distributed in the hope that it will be useful, but
### WITHOUT ANY WARRANTY; without even the implied warranty of
### MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
### General Public License for more details.
###
### You should have received a copy of the GNU General Public License
### along with Octave; see the file COPYING.  If not, write to the Free
### Software Foundation, 59 Temple Place - Suite 330, Boston, MA
### 02111-1307, USA.

## usage: top_title (text)
##
## NOTE: this will work only with gnuplot installed with
##       multiplot patch
##
## makes a title with text "text" at the top of the plot 

## Author: Vinayak Dutt <Dutt.Vinayak@mayo.EDU>
## Created: 3 July 95
## Adapted-By: jwe

function top_title (text)

  if (! gnuplot_has_multiplot)
    error ("top_title: gnuplot does not appear to support this feature");
  endif

  if (nargin != 1)
    usage ("top_title (text)");
  endif

  if (isstr (text))
    set bottom_title;
    set title;
    eval (sprintf ("set top_title \"%s\"", text));
  else
    error ("error: top_title: text must be a string");
  endif

endfunction